Great to get your message. Yes, I do have Hannah (O'Mahony) and John L Quinlan of Kilcow on my family tree. We share a common ancestor, Ned O'Mahony (born at a guess 1780). We are both descended from two of his sons (he had 4 sons, one died young), mine being James O'Mahony and yours being Martin O'Mahony. I believe Hannah was one of 15 children.